Astro 6

  1. Could we see a galaxy that is 20 billion
    light-years away?
    No, because it would be beyond the bounds of our observable universe.
  2. What do astronomers mean by the Big
    The event that marked the beginning of the expansion of the universe
  3. Suppose you live in the United States and you
    see a crescent moon in your evening sky tonight. What will a friend in South
    America see tonight?
    Your friend will also see a crescent moon.
  4. Which of these discoveries of Galileo
    contradicted the idea that everything orbited the Earth?
    Moons revolving around Jupiter.
  5. Copernicus's model of the solar system gave
    much better predictions than the model of Ptolemy.
  6. Where is our solar system located within the
    Milky Way Galaxy?
    Roughly halfway between the center and the edge of the visible disk of the galaxy
  7. How does Earth's varying distance from the Sun
    affect our seasons?
    It doesn't; Earth's orbital distance plays no significant role in the seasons.
  8. We describe a location on Earth's
    surface by stating its ________.
    latitude and longitude
  9. From the fact that virtually every galaxy is
    moving away from us and more distant galaxies are moving away from us at a
    faster rate than closer ones, we conclude that
    the universe is expanding.
Card Set
Astro 6
exam 1